• There's a udev rule that you can copy in to /etc/udev/rules.d/ that might help: https://github.com/espruino/Espruino/blo­b/master/misc/45-espruino.rules

    It'll make sure that the board is in 'plugdev', which I think your user is in by default.

    I still have an error connecting sometimes, but it usually resolves itself if I try again after 30 seconds or so. Looking at the command history on Espruino it looks as if some service in Ubuntu is trying to talk to it as if it's a modem.


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